Which two design recommendations are most appropriate when EIGRP is the data center corerouting protocol？ （）

多项选择题WhichtwodesignrecommendationsaremostappropriatewhenOSPFisthedatacentercore routingprotocol？（）

A. Never use passive interfaces.
B. Use NSSA areas from the core down.
C. Use totally stub areas to stop type 3 LSAs.
D. Use the lowest Ethernet interface IP address as the router ID.
E. Tune OSPF timers to enable OSPF to achieve quicker convergence

单项选择题Whichofthefollowingisacharacteristicofadatacentercore？（）

A. Server-to-server traffic always remains in the core layer.
B. The recommended practice is for the core infrastructure to be in Layer 3.
C. The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.
D. The Cisco Express Forwarding hashing algorithm is the default， based on the IP address andLayer 4 port.
E. Core layer should run BGP along with an IGP because iBGP has a lower administrativedistance than any IGP.

多项选择题Whichtwoofthesemulticastdeploymentsaremostsusceptibletoattacksfromunknownsources？（）

A. ASM
B. BiDir PIM
C. PIM-SM RP
D. RP-Switchover
E. Source Specific Multicast

单项选择题WhatisthedefaultvalueoftheSPTthresholdinCiscorouters？（）

A. 0
B. 1
C. 2
D. 4
E. 16
F. infinity

多项选择题Refer to the exhibit. Which two statements are correct regarding the creation of a multicas tdistribution tree？ （）

A. Each router determines where to send the JOIN request.
B. The tree will be built based on the IP address of the E2 interface on router E
C. The best path to the source will be discovered in the unicast routing table on router B
D. The best path to the source will be discovered in the unicast routing table on router C
E. The best path to the source will be discovered in the unicast routing table on router E